Improvement in looms



UNITED STATES PATENT OFFICE.

GASPAR ZVICKI, OF PITTSBURG, PENSYLVANIA.

IMPROVEMENT IN LOOMS.

Specification forming part of Letters Patent No. 41,2541, dated Januaryv 12, 1864.

,To all whom, it may concern,.-

Be it known that I, GASPAR ZwIcKI, of Pittsburg, in the county of Allegheny and`J State of Pennsylvania, have invented certain new and useful Improvements in Looms; and I do hereby declare the following to be a full, clear, and exact description of the construction and operation of the saine, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l represents an elevation of one end of the loom. Fig. 2 represents an elevation of the opposite end. Fig. 8 represents a rear elevation of the loom. Figs. 4 and 5 represent the forms of shuttles which I propose to use in connection with the loom.

Similar letters of reference, where they occur in the several iigures,denote like parts of the loom in all cases.

My invention consists in the manner in which I have geared the two main drivingshafts and arranged the, cams thereon for the purpose of working the pickerstaffs alternately and alternately lifting out of action the arms which operate the picker-staves when they are not being worked, as will be hereinafter explained.

A represents the frame of the loom,in which is hung the shaft B, driven by a pulley,-G, that in turn is driven by any first-moving power.

D is a loose pulley for shifting the belt onto when the loom is to be stopped.

On the opposite end of the shaft B from the pulley G there is a gear, E, which works into a gear, F, on the shaft G, said gear'F being of such size as to give to its shaft G one revolution for every two revolutions of the shaft B.

On the shaft B there are two cams,a b, which, by striking against the arms c d, alternately work the picker-staves e f, as will be eX- plained hereinafter, and the arms c d may have coneshaped rollers upon them to facilitate the rocking of their shafts g h, which workthepicker-staves. Upon thelower shaft, G,there are also two cams, J K,which in their rotation come against ca1n-projections t' on levers L, connected to the lower ends of the sh tfts g h, and thus alternately raise up said shafts, so as to take the arms c d alternately out of reach of the cams c b, that would otherwise strike against and operate them, and through them the picker-staves ef. The ends of the levers L, which get their throw through the rocking of the shafts g h, to which they are respectively;y attached, are connected by a thong, strap, or other flexible connection, M, to the picker-staves, respectively, and thus give to said picker-staves the motion that impels the shuttle through the race,while a light spring, j, returns them to their place again for a similar operation.

The raceway N is connected to the pulley C at one end and to the gear E at its opposite end by connecting-rods k Z, attached to wristpins m n therein, and thus gets-its beat, the picker-staff frames being supported on pins o p, on which they can turn to admit of the beat or vibratory motion of the raceway and its several connected parts.

At Figs. 4 and 5 I have shown the top and bottom plans of the shuttles,such as I propose to use in this loom. The bottom s and face t of these shuttles are flat and at right angles to each other. The top or third side, q, may be rounded or chamfered off from top to bottom. In the under sides of these shuttles I form mortises or gains r, in which the points of the picker-staffs ef,projecting up through slots into the raceway, take to throw the shuttle,avoiding in this way the use ofpickers between the shuttle and the picker-staves.

The operation of the loom is very simple, while it may be run at a very high speed.

Having thus fully described the construei tion and operation of my invention, what I. claim therein as new, and desire to secure by Letters Patent, is y The arrangement of the cams a b on the shaft B and of the cams J K upon the shaft G, said shaft B having two revolutions to one of the shaft G, and the cams of both shafts acting upon the rocking shafts g h to work alternately and inove out of action alternately the picker-staves, substantially as described.

GASPAR ZWICKI.

Witnessem A. B. S'roUGn'roN, HAvER FENDEICH. 

